Closure apparatus with pressure test device

Details Closure apparatus with pressure test device Closure apparatus with pressure test device

1988-10-06

1990-02-20

Chambers, A. Michael

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

73 405R, 73707, 73756, 175 48, F16K 3700

Patent

active

049017616

ABSTRACT:
A drilling fluid saver valve apparatus incorporating a pressure test device. The apparatus includes a tubular body having a valve seat and a closure check valve moveably mounted in spring loaded relation within the body to be normally seated in closed relation to permit flow of fluids under pressure only from a drilling kelly into the drillpipe, and a pressure test device connected into a side port formed in the body between the valve seat and drillpipe.

REFERENCES:
patent: 284067 (1883-08-01), Ross et al.
patent: 2313169 (1943-03-01), Penick et al.
patent: 2618978 (1952-11-01), Ragland
patent: 2832556 (1958-04-01), Bielstein
patent: 3331385 (1967-07-01), Taylor
patent: 3566696 (1971-03-01), Maddison et al.
patent: 3915008 (1975-10-01), Silverman et al.
patent: 4754818 (1988-07-01), Wood

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